Research Article
Estimates of Volume and Carbon Stock Removals in Miombo Woodlands of Mainland Tanzania
Table 2
Volume, biomass, and carbon removals by vegetation, land use, and ownership types.
| Miombo management categories | Miombo management categories subdivision | Volume (m3 ha−1 year−1) | Biomass (t ha−1 year−1) | Carbon (tC ha−1 year−1) | AGB | BGB | AGC | BGC |
| Vegetation types | Closed woodlands (crown cover >40%) | 1.3 ± 0.38a | 0.95 ± 0.27a | 0.33 ± 0.08a | 0.46 ± 0.13 | 0.16 ± 0.04 | Open woodlands (crown cover between 10 and 40%) | 1.8 ± 0.39a | 1.28 ± 0.25a | 0.44 ± 0.07a | 0.63 ± 0.12 | 0.22 ± 0.03 | Woodlands with scattered cropland | 1.91 ± 0.79a | 1.47 ± 0.60a | 0.66 ± 0.27a | 0.72 ± 0.30 | 0.33 ± 0.13 |
| Land use | Production forest | 2.06 ± 0.63abc | 1.45 ± 0.41abc | 0.48 ± 0.11ab | 0.71 ± 0.20 | 0.23 ± 0.10 | Protection forest | 1.15 ± 0.40abc | 0.85 ± 0.28abc | 0.32 ± 0.09ab | 0.41 ± 0.14 | 0.16 ± 0.07 | Wildlife reserve | 0.54 ± 0.17bc | 0.4 ± 0.12bc | 0.15 ± 0.04b | 0.2 ± 0.06 | 0.07 ± 0.03 | Shifting cultivation | 3.63 ± 1.09ab | 2.71 ± 0.08ab | 1.08 ± 0.30a | 1.33 ± 0.39 | 0.53 ± 0.19 | Agriculture | 2.54 ± 1.44abc | 1.93 ± 1.08abc | 0.8 ± 0.44ab | 0.94 ± 0.53 | 0.39 ± 0.26 | Grazing land | 2.02 ± 1.39a | 1.37 ± 0.87a | 0.4 ± 0.18ab | 0.67 ± 0.43 | 0.19 ± 0.21 | Built-up areas | 0.4 ± 0.39bc | 0.32 ± 0.30bc | 0.16 ± 0.14b | 0.16 ± 0.15 | 0.08 ± 0.07 | Water body/swamp | 1.26 ± 0.93abc | 0.97 ± 0.78abc | 0.41 ± 0.39ab | 0.48 ± 0.35 | 0.2 ± 0.11 | Other lands | 0.29 ± 0.18c | 0.23 ± 0.11c | 0.1 ± 0.09b | 0.11 ± 0.06 | 0.05 ± 0.21 |
| Ownership type | Central government land | 0.75 ± 0.25a | 0.55 ± 0.18b | 0.21 ± 0.06a | 0.27 ± 0.09 | 0.13 ± 0.03 | Local government land | 1.26 ± 0.50a | 0.93 ± 0.36ab | 0.35 ± 0.13a | 0.46 ± 0.18 | 0.22 ± 0.06 | Village land | 2.05 ± 0.54a | 1.45 ± 0.35ab | 0.49 ± 0.09a | 0.71 ± 0.17 | 0.35 ± 0.05 | Private land | 2.67 ± 0.99a | 1.95 ± 0.68a | 0.72 ± 0.20a | 0.96 ± 0.34 | 0.47 ± 0.10 | General land | 2.3 ± 1.29a | 1.68 ± 0.93ab | 0.59 ± 0.32a | 0.82 ± 0.46 | 0.4 ± 0.16 | Not know | 0.77 ± 0.22a | 0.59 ± 0.17b | 0.25 ± 0.05a | 0.29 ± 0.04 | 0.14 ± 0.01 |
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Note: volume and/or biomass with the same superscript letters in the category are not significantly different (p < 0.05).
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